166381347 has 32 divisors (see below), whose sum is σ = 258048000. Its totient is φ = 94292640.

The previous prime is 166381337. The next prime is 166381351. The reversal of 166381347 is 743183661.

It is not a de Polignac number, because 166381347 - 2¹⁰ = 166380323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166381337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47854 + ... + 51212.

It is an arithmetic number, because the mean of its divisors is an integer number (8064000).

Almost surely, 2^166381347 is an apocalyptic number.

166381347 is a deficient number, since it is larger than the sum of its proper divisors (91666653).

166381347 is a wasteful number, since it uses less digits than its factorization.

166381347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471.

The product of its digits is 72576, while the sum is 39.

The square root of 166381347 is about 12898.8893707947. The cubic root of 166381347 is about 550.0069938505.

The spelling of 166381347 in words is "one hundred sixty-six million, three hundred eighty-one thousand, three hundred forty-seven".